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A. W. ADAMS.

Construction of Meter Safes.

Patented May 5, 1868.

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ALONZO W- ADAMS, or NEW'YORK, N. Y.

Letters Patent No. 77,563, dated May 5, 1868.

IMPROVEMENT IN CONSTRUCTION OFME'I'ER-SAPE.

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Be it known that L ALO NZO W. ADAMS, of. the city and State of New York, have invented a new'and improved Meterafc, designed 'to' enclose and protect liquidmeters, safety-guards for steam-boilers, and other similar instruments. I p

The'oblject of my inventionis to provide a meun's for securing and protecting spirit orotherme'ters, so that their registration cannot be altered or tampered with without'violence sufiieient to breaker destroy the safe in which such meter is enclosed.

And the. invention consists. in so constructing and arranging theportions ofthe'safe within which the met-er is enclosed, and'combining therewith suitable fastenings, as torcnder it impossible to gain access to the meter without breahing or destroying a portion of the safe.

The following is' a ful-l,-clear, and exact description-ofthe said invention, and the operation of the same, reference beinghad to the annexed drawings, making part'of this specifieation,-in which Figures 1 and Zrepresentthe interior of the safe, with fastenings attached.

HH is the top of the'safc. M M is the window, of plategl ass, through which the indications of the meter" or other instrument are observed. K K represent an edge view of the doorof the safe, to which are attachcd the bolts 13 B and I I. The catches C G C C are attached to the top of the safe by the screws D D. D D, on

which the catches play sufiiciently to admit the head of the boit when forced in, as at III in fig. 2. L L'L IL are spiral springs which allow the catches C O G to .open and receive the heads of 'the bolts, and cause them to close agaiuwhen the bolts arc in, locking and holding them securely. I

lhe bolts may either be solidly attached to the door of the safe, as atB B in fig. l, or -they may be made separately, in the form shown at I in Figure 3, and let into suitable recesses iri the-door, as at R R- in-fig. 2. In this latter case the square'head of the bolt should be made of the best steel,.and tempered to such hardness as to resist boring or cutting, except by the expenditure of great labor and'time.

Figure 4 is an'edgc viewot the top of the safe. 0 O are lugs'cast on the plate N, and having the faste'nings attached, the catches being shown at C C C G, and the bolts'at I I. I

Figureb is a front view of the safe, '1 being the door, and Q Q showing the square heads of the solid steel bolts, as above described. i

The safe should be made of cast iron, and is constructed with proper flanges, for attaching the meter or other instrument, and is designed to be enamel-led on the outside with porcelain or-other suitable material, so

as plainly to exhibit any marks of violence. When the safe is to be opened by the proper authority, the head of the bolts may be' bored out, or the solid door may be broken by a heavy hammer. The door being simply let into the lower plate ofthe safe by a suitable g'roove-and-tongue joint, maybe readily replaced by another, after being broken for any pin-pose of examination or adjustment.

What I claim as my invention, and desire to secure by Letters Patent, is-

A safe, of east or wrought metal, provided with an opening, M, arranged as described, and a. door or'side, which, when closed, becomes permanently locked, by means of the devices herein'above described, or their equivnlents, so that the safe cannot be opened except by. violence, the whole being adapted to enclose and protect 'a meter, as and for the purpose set forth. I

A. W. ADAMS.

Witnesses:

FRED. P. STANTON, M. H. N. KENDIG. 

